#include <stdio.h>
#include <stdlib.h>

int main()
{
	int dividend = 20;
	int divisor = 0;
	int quotient;
	
	if( divisor == 0){
		fprintf(stderr, "除数为 0 退出运行...\n");
		exit(-1);
	}
	quotient = dividend / divisor;
	fprintf(stderr, "quotient 变量的值为 : %d\n", quotient );
	
	exit(0);
}
